c03631f93aed51e9b60b6dac4017bef991c7c30c15425d01a4f95e9158072843

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
27-03-2024 01:39

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General

Target

2024-03-27_8b58666507be5c22cc25aa45265ac2c6_cryptolocker.exe
Size

43KB
MD5

8b58666507be5c22cc25aa45265ac2c6
SHA1

340cff2ff55db77def4ce0b85e4f004c4e21cbb4
SHA256

c03631f93aed51e9b60b6dac4017bef991c7c30c15425d01a4f95e9158072843
SHA512

40d7ade3e2cebb3a94f245e87235c99e0c694cf1dbeec010cead9f88538a8ae2dba0b459376a91e747d1ce8ee6490687da95223ba0f4216e8480b886b2a5fe39
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDDw3sCu5b+syQNSDn:bgGYcA/53GADw8Cl/h

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023208-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-27_8b58666507be5c22cc25aa45265ac2c6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
936	hasfj.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3736 wrote to memory of 936	3736	2024-03-27_8b58666507be5c22cc25aa45265ac2c6_cryptolocker.exe	86
PID 3736 wrote to memory of 936	3736	2024-03-27_8b58666507be5c22cc25aa45265ac2c6_cryptolocker.exe	86
PID 3736 wrote to memory of 936	3736	2024-03-27_8b58666507be5c22cc25aa45265ac2c6_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-03-27_8b58666507be5c22cc25aa45265ac2c6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-27_8b58666507be5c22cc25aa45265ac2c6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3736
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
43KB

MD5
7daa92878de0c4bd1cc6e262a2608332

SHA1
6e59a1550bd18d4c6bf1de98c7429535925d07a9

SHA256
97a8d2a4862e953e21181a8286fc28d2b9a6ed28105761a9323322a80816a267

SHA512
536e426153cf0ce29ab8050f7b8e0dbeb04c750e662000bd1824eb19d44952a2cff5aa907492075f21a93deb18d58df4b452e9756a211894412aba2f78b9ed3e

Download Submit
memory/936-17-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/936-20-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/3736-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3736-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3736-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download